A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Durability in recreational runners : effects of 90-min low-intensity exercise on the running speed at the lactate threshold (2024)
Nuuttila, O.-P., Laatikainen-Raussi, V., Vohlakari, K., Laatikainen-Raussi, I., & Ihalainen, J. K. (2024). Durability in recreational runners : effects of 90-min low-intensity exercise on the running speed at the lactate threshold. European Journal of Applied Physiology, Early online. https://doi.org/10.1007/s00421-024-05631-y
JYU-tekijät tai -toimittajat
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Julkaisun tiedot
Julkaisun kaikki tekijät tai toimittajat: Nuuttila, Olli-Pekka; Laatikainen-Raussi, Vesa; Vohlakari, Krista; Laatikainen-Raussi, Iida; Ihalainen, Johanna K.
Lehti tai sarja: European Journal of Applied Physiology
ISSN: 1439-6319
eISSN: 1439-6327
Julkaisuvuosi: 2024
Ilmestymispäivä: 09.10.2024
Volyymi: Early online
Kustantaja: Springer Nature
Julkaisumaa: Saksa
Julkaisun kieli: englanti
DOI: https://doi.org/10.1007/s00421-024-05631-y
Julkaisun avoin saatavuus: Avoimesti saatavilla
Julkaisukanavan avoin saatavuus: Osittain avoin julkaisukanava
Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/99448
Tiivistelmä
Recent studies have suggested that the capability to resist deterioration of physiological characteristics could be an independent factor contributing to endurance performance. This study aimed at investigating whether prolonged low-intensity exercise induces shifts in the lactate threshold, and whether fatigue-induced changes differ between the sexes.
Methods
A total of 31 (15 females) recreational runners performed an incremental treadmill test and a 90-min low-intensity exercise (LIT90) on two separate occasions. The LIT90 was performed at 90% of the first lactate threshold speed (LT1v), derived from the incremental treadmill test. The LT1v was determined from a 5-stage (3 min) submaximal threshold test (SubmaxLT), performed before and after LIT90. The SubmaxLTs were followed by a 10/5 reactivity jump test. Respiratory gases, heart rate (HR), and HR-derived detrended fluctuation analysis alpha 1 (DFA-a1) were assessed every 15 min during the LIT90.
Results
A significant decrease (p < 0.01) was observed in the LT1v in females (− 5.8 ± 4.4%) and in males (− 5.3 ± 6.4%). The HR increased (p < 0.001) similarly in females (5.9 ± 3.1%) and in males (5.5 ± 3.6%) during the LIT90, while energy expenditure increased (3.1 ± 4.5%, p = 0.013) in females but remained unchanged in males (0.9 ± 3.1%). Change in DFA-a1 during the LIT90 was the only marker that correlated significantly with the relative change of LT1v (r = 0.463, p = 0.013).
Conclusion
LIT90 induced significant decreases in the LT1v, and the changes were comparable between sexes. DFA-a1 could be a potential intra-session marker of durability.
YSO-asiasanat: kestävyysharjoittelu; kestävyys; fysiologiset vaikutukset; juoksu; väsymys; anaerobinen kynnys; resilienssi
Vapaat asiasanat: physiological resilience; fatigue; fatigue resistance; endurance performance
Liittyvät organisaatiot
OKM-raportointi: Kyllä
VIRTA-lähetysvuosi: 2024
Alustava JUFO-taso: 1
